python - 在 bash 上运行 Flask : Could not import "app"

Question

我在 Flask 上编写了这段代码:

from flask import Flask

app = Flask(__name__)

@app.route('/')
def index():
    return "hi"

即使如此，我尝试使用 flask run 运行它，它会显示以下消息:

* Serving Flask app "app.py"
 * Environment: production
   WARNING: This is a development server. Do not use it in a production deployment.
   Use a production WSGI server instead.
 * Debug mode: off
Usage: flask run [OPTIONS]

Error: Could not import "app".

我做错了什么？

编辑: 应用程序结构:

website/
  | - app.py

Answer 1

from flask import Flask

app = Flask(__name__)

@app.route('/')
def index():
    return "hi"


if __name__ == '__main__':
  app.run(host='0.0.0.0', port=30006, debug=True)

在放置此代码的同一目录中运行。

python3 file_name.py

您可以访问它

http://0.0.0.0:30006/